1molNa2SiO3中不含NaOH

SiO2+2NaOH=Na2SiO3+H2O

不知道楼主是不是想问得到1molNa2SiO3需要多少molNaOH

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Originally posted by yuncheng at 2011-06-28 09:41:13:
SiO2+2NaOH=Na2SiO3+H2O

不知道楼主是不是想问得到1molNa2SiO3需要多少molNaOH

是的呀，到底是1mol还是0.5mol呢？

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Originally posted by taozhangfeng at 2011-06-29 08:33:59:
是的呀，到底是1mol还是0.5mol呢？

方程式里不是写了么？怎么会是1or0.5mol呢？

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Originally posted by yuncheng at 2011-06-29 08:44:33:
方程式里不是写了么？怎么会是1or0.5mol呢？

MCM-48 was
synthesized with a sodium silicate solution (20
wt.% aqueous solution, Na/Si = 0.5), CTABr and
ethanol [3]. The starting composition was 1.4
SiO2:1 CTABr:0.35 Na2O:5.0 EtOH:140 H2O
你看这文献上就说1molNa2SiO3里的Na/Si = 0.5，照你这么说不应该是2吗？我以前也是和你的想法一样，但我被这个文献搞糊涂了
，

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Originally posted by taozhangfeng at 2011-06-30 08:30:41:
MCM-48 was
synthesized with a sodium silicate solution (20
wt.% aqueous solution, Na/Si = 0.5), CTABr and
ethanol [3]. The starting composition was 1.4
SiO2:1 CTABr:0.35 Na2O:5.0 EtOH:140 H2 ...

合成的配料里比例和实际化学式里的比例不可能一样，经常会让一方过量，另一方才能完全反应的。文献里说的是实验的具体步骤哦。